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<script src='/resources/testharness.js'></script>
<script src='/resources/testharnessreport.js'></script>
<link rel='stylesheet' href='support/base.css' />
<link rel="author" title="Joy Yu" href="mailto:joysyu@mit.edu">
<link rel="help" href="https://drafts.csswg.org/css-tables-3/#visibility-collapse-cell-rendering">
<style>
table {
    border-spacing: 0;
    border-collapse: separate;
}
table td {
    border: 1px solid blue;
    padding: 5px;
}
</style>
<main>
    <h1>Visibility collapse</h1>
    <a href="https://drafts.csswg.org/css-tables-3/#visibility-collapse-cell-rendering">Spec</a>
    <p>
    Setting a row to visibility:collapse changes table height but not width.
    Here, the spanning cell is the only cell in its row.
    </p>
    <table id="one">
        <tr id="spanningRowRef">
            <td rowspan="5">B<br>B<br>B<br>B<br>B</td>
        </tr>
        <tr id="firstRowRef">
            <td>aaaa</td>
        </tr>
        <tr>
            <td>bbbb</td>
        </tr>
        <tr id="thirdRowRef">
            <td>cccc</td>
        </tr>
        <tr id="fourthRowRef">
            <td>dddd</td>
        </tr>
    </table>
    Bottom table is identical to top except second row has been collapsed.
    The spanning cell's height shrinks and is clipped.
    <table id="two">
        <tr id="spanningRow">
            <td rowspan="5" id="spanningCell">B<br>B<br>B<br>B<br>B</td>
        </tr>
        <tr id="firstRow">
            <td>aaaa</td>
        </tr>
        <tr id="secondRow" style="visibility: collapse">
            <td>bbbb</td>
        </tr>
        <tr id="thirdRow">
            <td>cccc</td>
        </tr>
        <tr id="fourthRow">
            <td>dddd</td>
        </tr>
    </table>

    This text should not intersect with the table.

</main>

<script>
    tests = [
        [
            document.getElementById('two').offsetWidth,
            document.getElementById('one').offsetWidth,
            "spanning row visibility:collapse doesn't change table width"
        ],
        [
            document.getElementById('fourthRow').offsetHeight,
            document.getElementById('fourthRowRef').offsetHeight,
            "fourth row stays the same height"
        ],
        [
            document.getElementById('thirdRow').offsetHeight,
            document.getElementById('thirdRowRef').offsetHeight,
            "third row stays the same height"
        ],
        [   document.getElementById('secondRow').offsetHeight,
            0,
            "spanning row visibility:collapse makes row height 0"
        ],
           [
               document.getElementById('firstRow').offsetHeight,
            document.getElementById('firstRowRef').offsetHeight,
            "first row stays the same height"
        ],
        [
            document.getElementById('spanningCell').offsetHeight,
            document.getElementById('firstRow').offsetHeight +
            document.getElementById('thirdRow').offsetHeight +
            document.getElementById('fourthRow').offsetHeight,
            "spanning cell shrinks to sum of remaining three rows' height"
        ]];
    for (i = 0; i< tests.length; i++) {
        test(function()
            {
                assert_equals.apply(this, tests[i]);
            },
            tests[i][2]);
    };
</script>
</html>
